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Sliding door or window
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Patent number 4,202,137
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Issue date May 13, 1980
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Three Rivers Aluminum Company
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Robert P. Randall
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Sliding window
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Patent number 4,064,653
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Issue date Dec 27, 1977
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Three Rivers Aluminum Company
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Robert P. Randall
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS